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Related Concept Videos

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The auditory system is essential for sound perception, utilizing various critical structures. When sound waves enter the outer ear, they travel through the ear canal and cause the eardrum to vibrate. These vibrations are then transmitted to the middle ear, where three tiny bones – the malleus, incus, and stapes – amplify the sound. This amplification is crucial, as it ensures that the sound vibrations are strong enough to be conveyed to the inner ear. These vibrations then reach the...
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Foreign Accent and Forensic Speaker Identification in Voice Lineups: The Influence of Acoustic Features Based on Prosody
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Talker variability in audio-visual speech perception.

Shannon L M Heald1, Howard C Nusbaum1

  • 1Department of Psychology, The University of Chicago Chicago, IL, USA.

Frontiers in Psychology
|August 1, 2014
PubMed
Summary
This summary is machine-generated.

Seeing a talker's face slows speech recognition in multi-talker situations, unlike in single-talker scenarios. This visual cue may increase the focus on talker identification, hindering overall comprehension speed.

Keywords:
audio-visual speech perceptionmultisensory integrationspeech perceptiontalker normalizationtalker variability

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Area of Science:

  • Speech perception
  • Auditory and visual processing
  • Phonetics and acoustics

Background:

  • Listeners adapt to talker variability, but this incurs a performance cost in audio-only speech.
  • Visual cues from a talker's face can improve speech recognition in adverse, single-talker conditions.
  • The impact of visual cues on multi-talker speech recognition remains unexplored.

Purpose of the Study:

  • To investigate whether visual speech information reduces the performance cost associated with multiple talkers.
  • To determine if seeing a talker's face affects word recognition speed in single- versus multiple-talker contexts.

Main Methods:

  • A speeded word-monitoring task was employed.
  • Listeners performed recognition tasks in both single- and multiple-talker conditions.
  • Both audio-only and audio-visual speech stimuli were used.

Main Results:

  • Word recognition was faster in single-talker conditions than in multiple-talker conditions for both audio-only and audio-visual speech.
  • However, recognition time in multiple-talker contexts was slower for audio-visual speech compared to audio-only speech.
  • This indicates a detrimental effect of visual cues in multi-talker environments.

Conclusions:

  • Visual speech cues do not reduce, but rather exacerbate, the performance cost in multiple-talker contexts.
  • Seeing a talker's face may slow recognition by emphasizing talker identification, signaling talker changes.
  • This suggests a trade-off between talker identification and speech comprehension in visually-rich, multi-talker environments.